Bug 1504884 - Drop AnimationInfo::mLayerManager. r=birtles

It's not used at all.

Differential Revision: https://phabricator.services.mozilla.com/D11105

--HG--
extra : moz-landing-system : lando

gfx/layers/AnimationInfo.cpp

@@ -12,8 +12,7 @@
 namespace mozilla {
 namespace layers {
 
-AnimationInfo::AnimationInfo(LayerManager* aManager) :
-  mManager(aManager),
+AnimationInfo::AnimationInfo() :
   mCompositorAnimationsId(0),
   mAnimationGeneration(0),
   mMutated(false)

gfx/layers/AnimationInfo.h

@@ -22,12 +22,12 @@ class Layer;
 class LayerManager;
 struct AnimData;
 
-class AnimationInfo
+class AnimationInfo final
 {
   typedef InfallibleTArray<Animation> AnimationArray;
 public:
-  explicit AnimationInfo(LayerManager* aManager);
-  virtual ~AnimationInfo();
+  AnimationInfo();
+  ~AnimationInfo();
 
   // Ensure that this AnimationInfo has a valid (non-zero) animations id. This value is
   // unique across layers.
@@ -70,7 +70,6 @@ public:
                                                 DisplayItemType aDisplayItemKey);
 
 protected:
-  LayerManager* mManager;
   AnimationArray mAnimations;
   uint64_t mCompositorAnimationsId;
   nsAutoPtr<AnimationArray> mPendingAnimations;

gfx/layers/Layers.cpp

@@ -189,7 +189,6 @@ Layer::Layer(LayerManager* aManager, void* aImplData)
   , mNextSibling(nullptr)
   , mPrevSibling(nullptr)
   , mImplData(aImplData)
-  , mAnimationInfo(aManager)
   , mUseTileSourceRect(false)
 #ifdef DEBUG
   , mDebugColorIndex(0)

gfx/layers/wr/WebRenderUserData.cpp

@@ -321,7 +321,6 @@ WebRenderFallbackData::SetGeometry(nsAutoPtr<nsDisplayItemGeometry> aGeometry)
 
 WebRenderAnimationData::WebRenderAnimationData(WebRenderLayerManager* aWRManager, nsDisplayItem* aItem)
   : WebRenderUserData(aWRManager, aItem)
-  , mAnimationInfo(aWRManager)
 {
 }